From what I've seen of friends/relatives who've gone through the process, you now trade "baby steps" for the long, slow slog. Here's hoping that you'll be back to your old energy level by Christmas - or at least by the next MCI! ;D
Cardiac rehab starts in a week or so. My surgeon, the cardiologist and the rehab place collaborate on a plan of attack...
I'm of the opinion that physical therapists are the same folks who used to staff dungeons and torture chambers during the dark ages...